What does LAD refer to in an EKG?

LAD stands for Left Axis Deviation in the context of an electrocardiogram (EKG or ECG). This term describes a condition where the electrical axis of the heart shifts more towards the left side. Typically, the heart's electrical activity is directed downward and to the left, resulting in a normal axis. However, in cases of Left Axis Deviation, the angle of this electrical activity deviates to a more negative angle, specifically between -30 degrees and -90 degrees.

Left Axis Deviation can be indicative of various cardiac conditions, such as left ventricular hypertrophy, inferior myocardial infarction, or conduction abnormalities. Recognizing LAD on an EKG is crucial for diagnosing underlying heart issues and determining appropriate management for the patient.

Other options, such as Left Atrial Deflection, Left Aortic Deviation, and Left Anterior Deviation, are not accurate terms used in ECG interpretation, making them incorrect in this context. The focus on electrical axis determination makes Left Axis Deviation the distinctly relevant choice when discussing EKG findings.